Hyaluronicacid(HA)isanimportantcomponentoftheextra tissuessuchasvitreous,subcutaneoustissue,cartilage,umbilicalcord,synovialfluidandtissues,etc ﹒,andhasattractedtheattentionofsev,inboththepharmaceuticalandcosmet icfields。Owingtoitswater‐bindingandrheologi ......